Where can I get/rent computer audio "books on tape"?

Not necessarily books; I am looking for state-of-the-art technology
summaries and analysis in audio format.  Technical, for software
engineers and architects; NOT audio targeted towards business people,
and NOT audio targeted towards computer illiterates (ie not "The
Internet for Dummies")!  And low cost please.

I want to know web sites to go to which have big selections of
technical audio books.  I have seen a couple books here and there at
the big online bookstores, but the selection for highly technical
books is dismal.

I know there is a rock solid reliable researcher out there who can
help me out!

Salam Suleiman
I do not think there are many recorder books but for sure there is a
lot of Interactive teaching materials over the web with Highly tech
details.

If you would like search on google for online courses and you would
find a lot

Regards